package upkeep and refactoring

[timriffe]

These commits take care of 1) \insertRef usage for citations 2) @inheritParams, @inherit details, seealso to simplify documentation 3) ineq_Cp() has been refactored for speed, worth checking out the logic of it 4) package version has a minor increment

When we meet Feb 28 I guess we can do 'nice' things, like set up unit testing + remote testing, or write a wrapper for all measures, get some badge swag for the repo, etc. This package is now usable as-is I think.

[timriffe]

OK, we now have a skeleton wrapper called ineq(), it just needs more thorough documentation. Some things to check off moving forward:

• [ ] consistent capitalization and naming
• [ ] @title should have a descriptive name, not a function name
• [ ] unit tests

[timriffe]

these latest commits do various things: quantile vectorized, MAD added, ineq() options increased, more ineq checks happening